
Chapter 6: Connection Management Efficient Networks
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Router family
Command Line Interface Guide
Page 6-20 Efficient Networks
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Time Interval Attribute (default, 1 second)
The time interval value specifies how often VRRP advertisement packets are sent. It
also determines how quickly a backup router can recognize that another VRRP router
is down.
If the backup does not receive a VRRP packet from another VRRP router during the
master down interval, the backup assumes the other router is down. The master down
interval is:
Master _Down_Interval = (3 * Time_Interval) + Skew_Time
Skew_Time = (256 - Priority) / 256
Thus, the default skew time is (256 - 100) / 256, or .609375. The default master down
interval is (3 * 1) + .609375, or 3.609375 seconds.
The time interval must be the same for every router in the Virtual Router, that is, for
every router in the LAN with the same VRID. For example, if a VRRP interface in
routers A, B, and C has the VRID 7, routers A, B, and C must all specify the same
time interval for VRID 7.
The time interval command is:
-> eth vrrp set timeinterval <priority> <vrid> [<port#>]
Password Attribute (no default)
You may specify an optional password of 1 to 8 characters. The password is only
used to authenticate VRRP advertisement packets. It is sent as clear text on the LAN.
If you do not specify a password, no password authentication is done.
The password must be the same for every router in the Virtual Router, that is, for
every router in the LAN with the same VRID. For example, if a VRRP interface in
routers A, B, and C has the VRID 7, routers A, B, and C must all specify the same
password for VRID 7.
The password command is:
-> eth vrrp set password <string> <vrid> [<port#>]
The command to clear the password is:
-> eth vrrp clear password <vrid> [<port#>]
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